Sökning: "DLS"

Visar resultat 11 - 15 av 41 avhandlingar innehållade ordet DLS.

1. 11. On the Electrolyte Induced Aggregation of Concentrated Silica Dispersions - An Experimental Investigation Using the Electrospray Technique

   Författare :Ann-Catrin J. H. Johnsson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Colloidal silica dispersion; aggregation; gelation; electrospray ES ; scanning mobility particle sizer SMPS ; synchrotron radiation small-angle x-ray scattering SR-SAXS ; electron microscopy EM ; dynamic light scattering DLS ; particle morphology; ion specificity; gel layer;

   Sammanfattning : Gels are weak, solid-like structures that arise when colloidal particles aggregate to form a network of particle clusters. A variety of colloidal systems that are important scientifically as well as in industrial applications are capable of gel formation, e.g. globular protein solutions, colloid-polymer mixtures, and metal oxides. LÄS MER

3. 12. A Waterborne Colloidal Model System Consisting of Fluorinated Spheres Bearing Grafted PEG: Synthesis, Characterization and Properties

   Författare :Jeanette Ulama; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; colloidal model system; steric stabilization; core-shell; poly ethylene glycol PEG ; heptafluorobutyl methactylate HFBMA ; fluorinated; polymer; phase behavior; short-range attractions; semi-batch emulsion polymerization; small angle X-ray scattering SAXS ; smearing effects; dynamic light scattering DLS ; cryogenic-transmission electron microscopy cryo-TEM ;

   Sammanfattning : Model systems have expanded our knowledge of numerous phenomena in Colloid Science, such as the appearance of glasses, order-disorder transitions involving crystals and attraction induced formation of gels. So far, the existing colloidal model systems have been limited mainly to nonaqueous media. LÄS MER

4. 13. Protein-surfactant interactions

   Författare :Ank Valstar; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; Physical Chemistry; fysikalisk kemi;

   Sammanfattning : Protein-surfactant interactions in aqueous media have been investigated. The globular proteins lysozyme and bovine serum albumin (BSA) served as model proteins. Several ionic and non-ionic surfactants were used.Fluorescence probe measurements showed that at low sodium dodecyl sulfate (SDS) concentration (< 0. LÄS MER

5. 14. Models of alveolar remodeling in chronic lung disease

   Författare :Oskar Rosmark; Institutionen för experimentell medicinsk vetenskap; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Extracellular matrix ECM ; Decellularization; Mass Spectrometry MS ; Biomechanics; Chronic obstructive pulmonary disease COPD ; Idiopathic pulmonary fibrosis IPF ; Alveolar epithelial cells; Fibroblasts; Lung slices;

   Sammanfattning : Lung function is highly dependent on the structure of the lung parenchyma. Remodeling of the alveolar compartment is a central part of the pathology of chronic lung disease such as chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis (IPF). LÄS MER

7. 15. Modeling Biophysical Mechanisms underlying Cellular Homeostasis

   Författare :Padideh Kamali-Zare; Hjalmar Brismar; Charles Nicholson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biological physics; Biologisk fysik;

   Sammanfattning : Cellular homeostasis is the effort of all living cells to maintain their intracellular content when facing physiological change(s) in the extracellular environment. To date, cellular homeostasis is known to be regulated mainly by time-consuming active mechanisms and via multiple signaling pathways within the cells. LÄS MER